47999521 has 2 divisors, whose sum is σ = 47999522. Its totient is φ = 47999520.

The previous prime is 47999513. The next prime is 47999527. The reversal of 47999521 is 12599974.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30030400 + 17969121 = 5480^2 + 4239^2 .

It is a cyclic number.

It is not a de Polignac number, because 47999521 - 2³ = 47999513 is a prime.

It is not a weakly prime, because it can be changed into another prime (47999527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23999760 + 23999761.

It is an arithmetic number, because the mean of its divisors is an integer number (23999761).

Almost surely, 2^47999521 is an apocalyptic number.

It is an amenable number.

47999521 is a deficient number, since it is larger than the sum of its proper divisors (1).

47999521 is an equidigital number, since it uses as much as digits as its factorization.

47999521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 46.

The square root of 47999521 is about 6928.1686613419. The cubic root of 47999521 is about 363.4229096725.

It can be divided in two parts, 479 and 99521, that added together give a 5-th power (100000 = 10⁵).

The spelling of 47999521 in words is "forty-seven million, nine hundred ninety-nine thousand, five hundred twenty-one".